MLA

Koch, Frederick R. (Frederick Robinson). Music/Nerone, act III. Box 275, folder 1617. 1933-34. https://collections.library.yale.edu/catalog/31907662.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 275, folder 1617"])(1933-34)[Music/Nerone, act III]. https://collections.library.yale.edu/catalog/31907662.